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Made some mold inserts out of A2. It is very stable will grow about .0002 per inch. Od grows and ID shrinks. One toolmaker I work with knew the material so well. As long as it was not a shut off. He would finish all features before heat treat. When that inserts would come back. He would shine them up with some 600 grit paper and install them.
Mazatrol is very user Friendly for make washers. NO surfacing and nothing out of the Box. It is great for turn and simple milling. I would strongly advise Makino with a CAM system. That has an environment for verifying.
I have a project for 3 pieces out of 4140 3 inch thick. Plan on leaving .05 per side and finish outside of part that is in clearance. I will let you all know the results.
We have a J-300 and getting a I-200. I looked at Mori and Okuma. I think Okuma has a solid machine and I really like Mori for the ball-screw chillers. Mazak service needs major improvements.
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